Voice over Internet Protocol (VoIP) telephony compatible with mobile phone handsets is still in development but is likely to become increasingly popular over time, according to the Internet Telephony Services Providers' Association (ITSPA).

Colin Duffy, chief executive of ITSPA founder member VoIPfone, said that a mobile VoIP phone, which is a dedicated Wi-Fi phone, came onto the market about two years ago, but has not been that popular so far.

"What I think will be the proper solution to mobile VoIP is a dual phone – an old-fashioned cell phone that is also a VoIP phone simultaneously, so that when it picks up a Wi-Fi signal it uses that instead of the mobile [network]," he added.

Mr Duffy went on to say that mobile companies are worried about phones having internet capabilities because it makes their role unnecessary.

Research published last month by T-Mobile claimed that 42 per cent of small businesses feel they pay too much for their mobile communications.


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